The best way to take it, is not to and throw that junk away. It was probably prepared in really unsanitary conditions by criminals out for maximum profit, like they give a shit about your health, and it is probably cut with research chemicals or at least contains other chemicals left over from the synthesis. It's simply horrible, nasty stuff for the human body, it totally fucks with it and nobody should take their health for granted like that. Even if it's pure, that real Mdma is one of the worse things you can take. It causes physical damage to the brain, and it puts stress on other organs like the liver and heart. Although addiction is unsustainable with Mdma because the damage occurs so quickly, it is possibly to be swept up by the drug for a good 6 months before being spit back out, and you can definitely get stupid from it too. I have seen this happen many times before to people who never had drug problems or even smoked weed. Stay away.